Extracting prog: 5m31.780887178s Minimizing prog: 2h16m14.151816278s Simplifying prog options: 0s Extracting C: 3m7.090124493s Simplifying C: 23m57.543239912s extracting reproducer from 1 programs testing a last program of every proc single: executing 1 programs separately with timeout 30s testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash single: failed to extract reproducer single: executing 1 programs separately with timeout 6m0s testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program crashed: INFO: task hung in iterate_supers single: successfully extracted reproducer found reproducer with 8 syscalls minimizing guilty program testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r1 = dup(r0) write$FUSE_BMAP(r1, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r1, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) write$FUSE_BMAP(0xffffffffffffffff, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(0xffffffffffffffff, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) write$P9_RVERSION(0xffffffffffffffff, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r0 = dup(0xffffffffffffffff) write$FUSE_BMAP(r0, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r0, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX, @ANYBLOB=',wfdno=', @ANYRESHEX=r0]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, 0x0, 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(0x0, 0x0) write$P9_RVERSION(0xffffffffffffffff, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r0 = dup(0xffffffffffffffff) write$FUSE_BMAP(r0, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r0, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX, @ANYBLOB=',wfdno=', @ANYRESHEX=r0]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, 0x0, 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, 0x0, 0x0) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, 0x0, 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB, @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, 0x0, &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', 0x0, 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r1 = dup(r0) write$FUSE_BMAP(r1, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r1, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, 0x0) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r0, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r1 = dup(r0) write$FUSE_BMAP(r1, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r1, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB, @ANYRESHEX=r2]) sync() program did not crash testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB, @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program did not crash extracting C reproducer testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync program crashed: INFO: task hung in iterate_supers simplifying C reproducer testing compiled C program (duration=6m0s, {Threaded:false Repeat:true RepeatTimes:0 Procs:5 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync program crashed: no output from test machine a never seen crash title: no output from test machine, ignore testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync program crashed: INFO: task hung in iterate_supers testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync program crashed: INFO: task hung in iterate_supers testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync program crashed: INFO: task hung in iterate_supers testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync program crashed: INFO: task hung in iterate_supers testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync program crashed: INFO: task hung in iterate_supers testing compiled C program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync program crashed: INFO: task hung in iterate_supers testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program crashed: INFO: task hung in iterate_supers validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program crashed: INFO: task hung in iterate_supers validation run: crashed=true testing program (duration=6m0s, {Threaded:true Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false CallComments:true LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): mkdirat-pipe2$9p-write$P9_RVERSION-dup-write$FUSE_BMAP-write$FUSE_DIRENTPLUS-mount$9p_fd-sync detailed listing: executing program 0: mkdirat(0xffffffffffffff9c, &(0x7f0000002040)='./file0\x00', 0x0) pipe2$9p(&(0x7f0000000240)={0xffffffffffffffff, 0xffffffffffffffff}, 0x0) write$P9_RVERSION(r1, &(0x7f0000000080)=ANY=[@ANYBLOB="1500000065ffff097b000008003950323030302e4c"], 0x15) r2 = dup(r1) write$FUSE_BMAP(r2, &(0x7f0000000100)={0x18}, 0x18) write$FUSE_DIRENTPLUS(r2, &(0x7f0000000400)=ANY=[@ANYBLOB="ce020000000000009860d7e7cf282dffe6e2660fb1fabc421a8b45e522d8c03e435df6e381965e4478b14419cbbed752", @ANYRES64=0x0, @ANYBLOB, @ANYRES32=0x0, @ANYRES32, @ANYBLOB], 0xb0) mount$9p_fd(0x0, &(0x7f0000000040)='./file0\x00', &(0x7f0000000b80), 0x0, &(0x7f0000000180)=ANY=[@ANYBLOB='trans=fd,rfdno=', @ANYRESHEX=r0, @ANYBLOB=',wfdno=', @ANYRESHEX=r2]) sync() program crashed: INFO: task hung in iterate_supers validation run: crashed=true reproducing took 2h58m22.64149234s repro crashed as (corrupted=false): INFO: task syz.0.17:4439 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.17 state:D stack:28464 pid:4439 ppid:4385 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 ksys_sync+0x91/0x150 fs/sync.c:102 __ia32_sys_sync+0xa/0x10 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fef47b8eba9 RSP: 002b:00007fef4897b038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007fef47dd6090 RCX: 00007fef47b8eba9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fef47dd6090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fef47dd6128 R14: 00007fef47dd6090 R15: 00007ffe8759f248 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cb2b570 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cb2bd90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/27: #0: ffffffff8cb2abe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8cb2abe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8cb2abe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 2 locks held by getty/4026: #0: ffff88802ff21098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41b/0x1380 drivers/tty/n_tty.c:2198 1 lock held by syz.0.17/4438: #0: ffff88807ece80e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.0.17/4439: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.18/4467: #0: ffff88801f25e0e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.1.18/4468: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.19/4490: #0: ffff888077f840e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.2.19/4491: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.3.20/4514: #0: ffff88805efb20e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.3.20/4515: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.4.21/4543: #0: ffff88807d6b80e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.4.21/4544: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.5.22/4578: #0: ffff88805a5fa0e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.5.22/4579: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.6.23/4607: #0: ffff8880772440e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.6.23/4608: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.7.24/4635: #0: ffff8880241840e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.7.24/4637: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.8.25/4665: #0: ffff888058bfa0e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.8.25/4667: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3f4/0x470 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3619 Comm: syslogd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:215 Code: 00 00 00 00 00 90 53 48 89 fb e8 17 00 00 00 48 8b 3d d0 a6 9e 0c 48 89 de 5b e9 37 58 4f 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d a4 9e 81 7e 65 8b 15 a5 9e 81 7e 81 e2 00 01 ff 00 74 RSP: 0018:ffffc90003087e18 EFLAGS: 00000246 RAX: ffffffff81e69d84 RBX: ffff88807d5d9b80 RCX: 0000000000000000 RDX: ffff88807efa3b80 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004a611e1 R10: ffffed1004a611e1 R11: 1ffff11004a611e0 R12: dffffc0000000000 R13: 1ffff1100fdf488f R14: ffff88807d5d9b80 R15: ffff88807d5d9bfc FS: 00007f78ceda7c80(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556174549a38 CR3: 000000007e4d2000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: file_needs_f_pos_lock fs/file.c:1027 [inline] __fdget_pos+0x1d4/0x360 fs/file.c:1036 fdget_pos include/linux/file.h:74 [inline] ksys_read+0x78/0x240 fs/read_write.c:604 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f78ceef7407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffcaa342730 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f78ceda7c80 RCX: 00007f78ceef7407 RDX: 00000000000000ff RSI: 000055729254d950 RDI: 0000000000000000 RBP: 000055729254d910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000055729254d9a3 R13: 0000000000000000 R14: 000055729254d950 R15: 0000557263d04d98 final repro crashed as (corrupted=false): INFO: task syz.0.17:4439 blocked for more than 143 seconds. Not tainted syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.0.17 state:D stack:28464 pid:4439 ppid:4385 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5244 [inline] __schedule+0x10ec/0x40b0 kernel/sched/core.c:6561 schedule+0xb9/0x180 kernel/sched/core.c:6637 schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6696 rwsem_down_read_slowpath+0x4f4/0x840 kernel/locking/rwsem.c:1094 __down_read_common kernel/locking/rwsem.c:1261 [inline] __down_read kernel/locking/rwsem.c:1274 [inline] down_read+0x94/0x2d0 kernel/locking/rwsem.c:1522 iterate_supers+0xa4/0x1d0 fs/super.c:755 ksys_sync+0x91/0x150 fs/sync.c:102 __ia32_sys_sync+0xa/0x10 fs/sync.c:113 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fef47b8eba9 RSP: 002b:00007fef4897b038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a2 RAX: ffffffffffffffda RBX: 00007fef47dd6090 RCX: 00007fef47b8eba9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fef47dd6090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fef47dd6128 R14: 00007fef47dd6090 R15: 00007ffe8759f248 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8cb2b570 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by rcu_tasks_trace/13: #0: ffffffff8cb2bd90 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x33/0xf00 kernel/rcu/tasks.h:517 1 lock held by khungtaskd/27: #0: ffffffff8cb2abe0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:350 [inline] #0: ffffffff8cb2abe0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:791 [inline] #0: ffffffff8cb2abe0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x51/0x290 kernel/locking/lockdep.c:6513 2 locks held by getty/4026: #0: ffff88802ff21098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:244 #1: ffffc9000327b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x41b/0x1380 drivers/tty/n_tty.c:2198 1 lock held by syz.0.17/4438: #0: ffff88807ece80e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.0.17/4439: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.1.18/4467: #0: ffff88801f25e0e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.1.18/4468: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.2.19/4490: #0: ffff888077f840e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.2.19/4491: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.3.20/4514: #0: ffff88805efb20e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.3.20/4515: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.4.21/4543: #0: ffff88807d6b80e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.4.21/4544: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.5.22/4578: #0: ffff88805a5fa0e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.5.22/4579: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.6.23/4607: #0: ffff8880772440e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.6.23/4608: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.7.24/4635: #0: ffff8880241840e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.7.24/4637: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 1 lock held by syz.8.25/4665: #0: ffff888058bfa0e0 (&type->s_umount_key#52/1){+.+.}-{3:3}, at: alloc_super+0x1fa/0x930 fs/super.c:228 1 lock held by syz.8.25/4667: #0: ffff88807ece80e0 (&type->s_umount_key#71){.+.+}-{3:3}, at: iterate_supers+0xa4/0x1d0 fs/super.c:755 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 nmi_cpu_backtrace+0x3f4/0x470 lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x1d4/0x450 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xeee/0xf30 kernel/hung_task.c:377 kthread+0x29d/0x330 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 3619 Comm: syslogd Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x4/0x60 kernel/kcov.c:215 Code: 00 00 00 00 00 90 53 48 89 fb e8 17 00 00 00 48 8b 3d d0 a6 9e 0c 48 89 de 5b e9 37 58 4f 00 00 00 cc cc 00 00 cc 48 8b 04 24 <65> 48 8b 0d a4 9e 81 7e 65 8b 15 a5 9e 81 7e 81 e2 00 01 ff 00 74 RSP: 0018:ffffc90003087e18 EFLAGS: 00000246 RAX: ffffffff81e69d84 RBX: ffff88807d5d9b80 RCX: 0000000000000000 RDX: ffff88807efa3b80 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1004a611e1 R10: ffffed1004a611e1 R11: 1ffff11004a611e0 R12: dffffc0000000000 R13: 1ffff1100fdf488f R14: ffff88807d5d9b80 R15: ffff88807d5d9bfc FS: 00007f78ceda7c80(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000556174549a38 CR3: 000000007e4d2000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: file_needs_f_pos_lock fs/file.c:1027 [inline] __fdget_pos+0x1d4/0x360 fs/file.c:1036 fdget_pos include/linux/file.h:74 [inline] ksys_read+0x78/0x240 fs/read_write.c:604 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f78ceef7407 Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff RSP: 002b:00007ffcaa342730 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 RAX: ffffffffffffffda RBX: 00007f78ceda7c80 RCX: 00007f78ceef7407 RDX: 00000000000000ff RSI: 000055729254d950 RDI: 0000000000000000 RBP: 000055729254d910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000202 R12: 000055729254d9a3 R13: 0000000000000000 R14: 000055729254d950 R15: 0000557263d04d98